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systemctl start network 报错
systemctl stop networkmanager
systemctl stop network.service
systemctl failed to connect to bus
systemct1 status network.service
systemd-networkd is not running
system network is not ready
systemctl status systemd
systemctl 报错
systemctl status named.service
systemctl命令报错
systemctl restart named报错
systemctl failed
systemctl start named
systemctl connection timed out
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